User manual

FAQ for CBECC-Res 2013

FAQs Posted on August 29, 2014

1. Will results change from Version 2c to Version 3?

2. A HERS requirement for return duct design shows up on every job I upload to the HERS provider.

How can I get this feature removed?

3. My building will have no cooling. If I enter 0 for the unique number of cooling systems (or the

count), my file will not run. How am I supposed to show no cooling?

4. Is there an update with regard to the HERS reporting for “no cooling”?

5. Why do I still have a watermark for an addition that should not require any HERS measures?

6. Can you explain the 2-story ventilation change in more detail? Is this related to whole house fans?

7. I am getting an error that seems to indicate a problem with the ducts in the attic. I previously had a

problem with a very small attic being unable to accommodate the default ducts in the attic. But in

this case the attic is over the entire house, so it should be big enough. Is there anything I can try to

correct this error?

8. Will I be able to take credit for changing an existing electric resistance heating system to a central

gas forced air unit (once verified existing conditions are available)?

FAQs Posted on August 6, 2014

1. I thought I installed bug fix 2c, but I am not sure. How can I tell if I am using 2c?

2. I am still seeing HERS requirements for existing HVAC systems. Wasn’t 2b/2c supposed to fix this?

3. If I have an Addition Alone, can I use the same exceptions mentioned in Question 5 from July 17 to

prove to the building department that I do not need to register my CF1R?

4. I switched a file from Addition and/or Alteration to Addition Alone and now it will not run. What do I

need to do?

5. Why are there HERS requirements when I modeled “No Cooling”?

6. Although I specify default values for roof reflectance, the CF1R is reporting non-standard roof

reflectance and a cool roof. How can I fix this?

7. When modeling a mini-split heat pump, the compliance results are not as expected. Am I doing

something wrong?

8. What is the correct way to model a duplex or townhome? Can I call this a multi-family building?

9. Has any progress been made in speeding up the software?

10. Does the software allow a PC’s video card handle tasks that are separate from execution?

11. Does the software run on a Mac computer?

12. Does the compiler support multi-core processor cores or hyper-threading?

FAQs Posted on July 17, 2014

1. I used one of the sample files for an Existing + Addition + Alteration and the CF1R conditioned areas

are off. Do you know why?

2. Can you explain how to use the status fields for HVAC and DHW correctly?

3. Can you explain the option to “verify” existing conditions for altered features?

4. Can you provide any more information about registering my CF1R?

5. What do I do about the watermark if I have an addition with no HERS requirements?

6. When I opened an existing input file, I am getting a message that indicates my file might not run. Is

that true?

7. When I tried to run the new option for an air to water heat pump, it would not run. Am I doing

something wrong?

8. I was using one of the new tool options to “Generate . . . Equipment Report Records” for HVAC,

DHW, or IAQ and now I cannot run my input file. Is there any way to fix this?